Then you must assign a present value factor (or factors if you want the students to do a
comparison). In this case, if you choose a 5% discount rate (a good one since students can
see how the interest and the discount rate counteract each other), the results will be:
For option 1, you can simply use the Present Value of an Annuity, since each payment is
the same. $100,000 10.3797 = $1,037,970.
For option 2 and 3 the results are:
Option 2 Option 3
Yearly Payment Factor Discounted $ Yearly Payment Factor Discounted $
$75,000.00 0.9524 $71,430.00 $45,000.00 0.9524 $42,858.00
$78,750.00 0.907 $71,426.25 $50,400.00 0.907 $45,712.80
$82,687.50 0.8638 $71,425.46 $56,448.00 0.8638 $48,759.78
$86,821.88 0.8227 $71,428.36 $63,221.76 0.8227 $52,012.54
Total Present Value Option 2 @ 5% discount―$1,071,412.54
Total Present Value Option 3 @ 5% discount―$1,049,692.69
In this case, the highest present value of the options is Option 2 as it is greater than Option
1 or Option 3.
If we change the discount rate to 10%, then adjustments must be made.
Option 1 can still be computed with the Present Value of an Annuity